Battery Spacer and Case Wall Positioning for Vibration Resistance
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Solution Overview
Problem
Conventional energy storage apparatuses fail to effectively restrict the movement of energy storage devices and spacers within a case, leading to inadequate vibration and impact resistance.
Innovation Solution
The energy storage apparatus is designed with a case configuration that restricts the movement of spacers by aligning them adjacently to case wall portions, utilizing protruding portions on both the case and spacer to prevent movement in specific directions, enhancing contact and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the energy storage device and spacer are housed in a case without specific positioning structures, then the device structure is simple and easy to manufacture, but the vibration resistance and impact resistance are insufficient due to movement of components
Solution Approach 1:
The case is designed with specific local features (protruding portions and recessed portions) at critical positions to restrict spacer movement, rather than making the entire case complex. This localized approach enhances vibration and impact resistance while maintaining overall structural simplicity.
Solution Approach 2:
The spacer's own protruding portion is utilized to engage with the case's recessed portion, creating a self-positioning mechanism that restricts movement without requiring additional fastening components or complex assembly procedures.
2Reliability
If protruding portions are added to both the case and spacer to restrict movement, then vibration and impact resistance are enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The protruding and recessed portions are integrated into the standard molding processes of the case and spacer respectively, combining the positioning function with the basic structural components. This avoids separate manufacturing steps while achieving the movement restriction function.
3Reliability
If the spacer is disposed adjacently to the case wall portion with contact configuration, then movement in second and third directions is restricted, but the insertion process becomes more difficult
Solution Approach 1:
The energy storage device and spacer are compressed in the first direction before insertion, preparing them in advance for the insertion process. This preliminary compression enables easier insertion while ensuring proper positioning against the case wall portion during assembly.
Data Source
AI summary
An energy storage apparatus 1 includes: an energy storage device 100; a spacer 200c that is arrayed with the energy storage device 100 in a first direction; and a case 300 that includes a case body 310 where an opening 310a is formed on one side in a second direction that is orthogonal to the first direction, the case 300 housing the energy storage device 100 and the spacer 200c, in which the case 300 includes a case wall portion 314 that is disposed in a posture where the case wall portion 314 is directed toward one side in the first direction, the spacer 200c is disposed at a position where the spacer200c faces the case wall portion 314 and is disposed adjacently to the case wall portion 314, and the case 300 is configured to be brought into contact with the spacer 200c such that a movement of the spacer 200c in at least one direction out of the second direction and a third direction that is orthogonal to the first direction and the second direction is restricted.